水平岩层、软弱围岩隧道控制超挖施工技术 刁天祥

:10045716(2000)005703:TV672+.1:A刁天祥　方俊波(隧道局科研所　洛阳　471009)以小浪底东苗家滑坡体排水洞施工为例,分析了在水平岩层软弱围岩中修建隧道所产生的超挖现象,介绍了在实际施工中所采用的控制超挖施工技术及经验体会。滑坡体　排水洞　水平岩层　软弱破碎围岩　超挖2050601.5m1.5m,100m,,,,1998,:(1);(2);(3):3.5m,3.9m,,900m111,:,:1#100m,1m,,,2#,,,,,3#1#100m,,,,22.13#,:,,,,2,,,,,2.2:,,,:,,,,5060m,,,WeakBlastingAppliedintheSoilTunnelPangJun(3thSectionofthe20thBureauofRailwayMinistryofChina,Sanyuan,713000)Abstract:ThispaperintroducestheapplicationofweakblastingachievedintheconstructionofSaharamosoiltunnelofShenyanRailway.Keywords:weakblastingsoiltunneloperationplaneffect2000WEST_CHINAEXPLORATIONENGINEERINGJan20002(a);(b),,,,,,,,,,,,2.3,2.3.1,,,,,,,,0.4m,=()2KS1#,1:1(m)0.090.080.080.050.06(m)0.180.150.100.090.1298.03.0598.03.1298.03.1598.03.2098.03.23(cm)0.220.200.190.170.16E=0.45mq=0.2kg/mE=0.4mq=0.2kg/mE=0.4mq=0.18kg/mE=0.4mq=0.16kg/mE=0.4mq=0.16kg/mES,1,,10cm,S=0.1m,E=0.4m,q=0.16kg/m2.3.2,,,,,2(b):,,,22(m)(/m)(m)(m)(kg)(kg/m)1.250.200.500.200.171.21.50.60.450.240.20,2.3.3,,,V(),78,,,,,,,V(6)28.4%,,13#,,0.15m,33.12#,,,,,,,,,,,,,,,,33.2,2#,2#(1),,,,,,(2),,,,58Jan20003(3),3.32#,3.3.1,,,++,,,443.3.2,,,,5,23,53.3.3,,;;,,,,:,,,2#6CRAS,135,,3,15,,,46(a);(b)7,900,130m/,,,85%,,,2(),,,1　齐景狱等编著.隧道爆破现代技术.北京:中国铁道出版社,1995.2　蔡福广编著.光面爆破新技术.北京:中国铁道出版社,1994.592000: